open-iov.git/tools/guest-diag/bridge_sems.sh, branch gr-forwarding

kernel: GR context-promote bisection modes 4-17 and server-managed-ctxbuf registry variant; complete vgsp rename; docs/tooling refresh

2026-10-02T19:13:06+00:00

- gsp_phys_booter: GR promote bisection modes 4-17 (two-phase zero-field VA, batched entries, hVirtMemory, bare VA, KMD SKIP_CTXBUFFER_ALLOC channel, old-interface GPU_INITIALIZE_CTX, FBMEM context buffer, UVM-faithful PA-only, PATCH/PM auxiliary promotes, server-managed no-promote path); PATCH/PM geometry queries and buffers; pre-boot SET_REGISTRY profile selection - gsp_phys_gpu: gsp_phys_rmcall_gr_promote clamp 0..17 and gsp_phys_srv_ctxbuf parameter; registry image variant with RMSetClientRMAllocatedCtxBuffer=0 - vgsp rename across kernel, scripts, tools and docs (module vgsp.ko, /sys/kernel/debug/vgsp/, vgsp-: log prefixes) - risc-v-gsp-rm-debugger user-facing rename and docs/CI refresh; guest-diag tool updates; README/SBOM/install/Makefile sync Live status: CE ladder and P6 guest-copy forwarding green; GR engine context commit still open (all promote shapes accepted or cleanly refused; the channel stays CTXNOTVALID) - see Handoff-vGPU-IO.md Addendum 21 (local).

tools/guest-diag: keep bridge_sems replies under the guest-agent size limit

2026-09-26T05:38:46+00:00

kernel: enlarge the pin table and its probe window; tools: bridge client mappings into the service

2026-09-24T14:48:08+00:00

The pin table became the primary VA->PA store once push-buffer regions and bridged client mappings started adding thousands of pages per boot; at 8192 slots with an 8-probe window, inserts were silently dropped and lookups missed at half load. 32768 slots and a 32-probe window keep the mapped set intact. tools/guest-diag/{guest_pmap_all.py,bridge_sems.sh} translate the CUDA client's /dev/nvidia* mappings through the guest's own pagemap and inject each present page into the service as a sysmem pin. With the client's semaphore pages pinned the service applies their releases into the page the client polls (verified: applied 67 -> 109, misses stop growing for those VAs), where before every write went to the vidmem shadow.